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Vol. XXVII, pp. 115 118 

July 10, 1914 






The following brief diagnoses of eleven new pocket gophers 
are published in advance of a monograph of the genus Thomomys , 
now nearing completion. The types are all in the Biological 
Survey Collection in the U. S. National Museum. 

Thomomys talpoides bullatus subsp. nov. 


Type from Powderville, Montana. Adult cT, No. 55,795, U. S. Nat. 
Mas., Biological Survey Collection. Collected July 2 1, 1893, by Dr. A. K. 
Fisher; original number, 1402. 

Characters. — Size of talpoides , but with larger andital bullap , lighter 
dentition and brighter colors. Considerably larger than elusius , with 
less gray on cheeks. Upperparts light butfy hazel, brightest on crown, 
ear patch blackish; lowerparts butfy, sometimes with white on chin; feet 
and tail whitish. 

Measurements of type . — Total length, 23-8; tail vertebrae, 72; hind foot, 

Thomomys talpoides caryi subsp. nov. 


Type from the head of Trapper Creek at 9500 feet altitude in the Big- 
horn Mountains, Wyoming. Adult 9, No. 108,940, IT. S. Nat. Mus., 
Biological Survey Collection. Collected June 10, 1910, by Merritt Cary; 
original number, 1993. 

Characters. — Size about ihe same as elusius , or slightly smaller; skull 
with smaller bulke and wider interparietal; colors slightly darker, without 
gray cheeks. Upperparts dull grayish brown, with plumbeous nose and 
blackish ear patch; lowerparts rich butfy, with white on chin and some- 
times on breast; feet soiled whitish; tail gray or butfy with whitish tip. 

27— Proc. Biol. Soc. Wash., Vol, XXVII, 19H. 


116 Proceedings of the Biologiccd Society of Washington. 

Measurements of type. — Total length, 196; tail vertebrae, 54; hind foot, 
26. More fully adult 9 topotype, 203, 53, 28. 

Thomomys talpoides nebulosus subsp. nov. 


Type from Sand Creek Canyon, Black Hills, Wyoming (Jack Boyden’s 
Ranch, 5 miles above mouth of canyon, at 3750 feet altitude). Adult <? , 
No. 202,495, U. S. Nat. Mus., Biological Survey Collection. Collected 
August 25, 1913, by Vernon Bailey; original number, 9508. 

Characters.— Size of talpoides, skull slender, less ridged, dentition 
lighter, bullae slightly more rounded. Color warm brown, much as in 
fossor. Upperparts dull walnut brown; nose plumbeous or dusky; ear 
patch blackish ; lowerparts huffy, generally with white on chin and some- 
times on breast; feet and tail whitish gray or huffy. 

Measurements of type.— Total length, 230; tail vertebrae, 66; hind foot, 
approximately 32 (27 without claws). 

Thomomys pryori sp. nov. 


Type from the Pryor Mountains, Montana, at 6000 feet altitude on head 
of Sage Creek. Adult d\ No. 66,469, IT. S. Nat. Mus., Biological Survey 
Collection. Collected July 16, 1894, by Vernon Bailey; original number, 

Character*.— Size of clnsius , with low, wide skull, short nasals and 
projecting incisors. Color darker than that of chtsius ; upperparts dull 
walnut brown, about as in fossor ; nose plumbeous; cheeks dark gray; 
ear patch black; lowerparts dark buff with no trace of white in topotype 
series; feet and tail soiled whitish or huffy. 

Measurements of type. — Total length, 210; tail vertebrae, 60; hind foot, 

Thomomys bottae minor subsp. nov. 


Type from Ft. Bragg, Mendocino Co., California. Adult cf\ No. 
146,463, U. S. Nat. Mus., Biological Survey Collection. Collected 
November 30, 1905, by James 11. Gant; original number, 4187. 

Characters. — Size smaller than bottae ; skull narrower and slenderer 
with especially slender rostrum and deeply einarginate posterior tip of 
nasals. Color slightly darker than in bottae ; upperparts dark cinnamon 
brown, heavily obscured with black, and in most specimens becoming 
almost black on nose, face, and around ears; feet white; tail grayish ; 
lowerparts ochraceous-buff; lips and lining of cheek pouches usually 

Measurements of type. — Total length, 226; tail vertebrae, 73; hind foot, 

Bail? if — EU ven Xew Specie* and Subspecies of Pocket Gophers. 117 

Thomomys neglectus sp. nov. 


' Type from San Antonio Peak (Hoar Flat Meadows* at (>400 feet altitude) 
in the San Gabriel Mountains, California. Adult cP, Xo. 137, SOU, 1 T . S. 
Nat. Mus., Biological Survey Collection. Collected July 23, 1903, hy 
James H. Cant; original number, 37 lit. 

Characters . — Size medium, skull long and narrow with almost straight 
dorsal outline. Color very dark with excess of clear black; upperparts 
dark gray produced by a heavy mixture of black-tipped hairs over dull 
butt’; nose, fact*, and ear patch blackish; tail gray, feet whitish; lower- 
parts dull Im tl*. 

Measurements of type . — Total length, 229; tail vertebrae, 77; hind foot, 
31 (32 measured dry). 

Thomomys mearnsi * sp. nov. 


Type from Gray’s Ranch in Animas Valley, southwest corner of Xew 
Mexico. Adnlt d\ Xo. 137,008, V. S. Xat. Mus., Biological Survey 
Collection. Collected August 10, 1908, by E. A. Goldman ; original num- 
ber, 19,939. 

Characters . — Slightly smaller than fnlvus ; skull short and wide with 
very slender, projecting incisors, much as in nelsoni. Color, upperparts 
dull cinnamon with blackish nose and ear patches; lowerparts pale cin- 
namon; tail butty gray; feet whitish. 

Measurements of tyjie . — Total length, 220; tail vertebne, 07; hind foot, 

Thomomys fuscus columbianus subsp. nov. 


Type from Touchet, Walla Walla County, Washington. Adult cJ\ 
Xo. t T . S. Xat. Mus., Biological Survey Collection. Collected 

September 10, 1890, by Clark P. Streator; original number, 234. 

Characters . — Size much larger than fuscus, slightl} T larger than quad- 
ratics ; skull heavier than that of quadratics ; colors paler than either, 
about as i u fisheri. Upperparts light fawn color or butty gray; sides and 
belly pale huffy gray; ear and postauricular patch black; nose slaty; tail 
gray with white tip; feet whitish. 

Measurements of type . — Total length. 209; tail vertebne, 60; hind foot, 


Thomomys fuscus saturatus subsp. nov. 


Type from Silver (near Sal tese) in the western corner of Missoula County, 
Montana, at 4300 feet altitude, in the Coeur d’Alene Mountains. Adult 

* I take pleasure in naming this gopher for Dr. E. A. Mearns, who has contributed 
so much to our know ledge of the mammals along the northern boundary of Mexico. 

118 Proceedings of the Biological Societg of Washington . 

d\ No. I T . 8. Nat. Mus., Biological Survey Collection. Collected 

June 20, 1891, by Clark I*. Streator; original number, 979. 

Characters. — Considerably larger than fuscus ; skull long and high with 
narrow brainease and wide nasals. Color darker and richer than in 
fuscus; upperparts dark hazel, becoming more yellowish on sides, and 
this shading into huffy wash on lower parts; ear patches black; nose 
plumbeous; feet and tail huffy gray. There is rarely a trace of white on 
chin or throat. 

Measurements of type. — Total length, 225; tail vertebrae, 77; bind foot, 
20 . 

Thomomys fuscus loringi subsp. now 

Type from South Edmonton, Alberta. Adult d\ No. 08,740, V. S. Nat. 
Mus., Biological Survey Collection. Collected September 23, 1894, by 
.1. A. Coring; original number, 2437. 

Characters. — Similar to fuscus hut slightly larger and duller colored, 
with relatively heavier dentition, and small, circular interparietal; ears 
small and pointed as in th o fuscus group. Color in winter pelage (Sep- 
tember 20): Upperparts dull russet brown, becoming rich buff on sides; 
nose slaty gray; small ear patch black; lowerparts rich huffy over plum- 
beous; chin and small spot on breast white; feet soiled whitish; tail pale 
huffy. Other pelages not known. 

Measurements of type. — Total length, 199; tail vertebne, 47; hind foot, 

Thomomys nevadensis atrogriseus subsp. now 

Type from Nampa, Idaho. Adult d\ No. 181,198, IT. S. Nat. Mus., 
Biological Survey Collection. Collected March 15, 1913, by L. E. Wyman ; 
original number, 35. 

Characters. — About the size of nevadensis and also dichromatic, but 
darker colored in gray phase and blacker in melanistic phase. Skull 
relatively wider at base and with shorter, thicker pterygoids. Color in 
gray phase: Upperparts dark huffy gray or sooty huff; nose and face 
blackish; ear patch black; feet and tail dirty gray; lowerparts washed 
with rich buff’; cheek pouches lined with black and white ; chin white. 
Color in black phase: Dull slaty black all over except white patch on 
chin and white toes, and usually lower part of feet. 

Measurements of type . — Total length, 315 ; tail vertebra*, 100; hind foot,